A simplified model of core thermal dilation [electronic resource].
- Argonne, Ill. : Argonne National Laboratory, 1987.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 9 : digital, PDF file
- Additional Creators:
- Argonne National Laboratory
United States. Department of Energy. Office of Scientific and Technical Information
- A simple analytical model is developed of core radial expansion for a fast reactor using a limited-free-bow core restraint design. The model is restricted to those bowing regimes where the plane of above core load pads (ACLP) is compacted to the point where the outermost driver assemblies are restrained at the ACLP from further compaction by a continuous network of contacting load pads, and where the top load pads (TLP) of the outer driver assemblies are restrained from further radial expansion by continuous load paths to the TLP restraint ring. Essentially elementary beam theory is used to calculate the elastic bow of a driver assembly at the core periphery subject to temperature dependent boundary conditions at the nozzle support, ACLP and TLP and subject to thermal and inelastic bowing deformations. The following design parameters are considered: grid plate temperature, core temperature rise, restraint ring temperature, grid plate and restraint ring thermal expansion coefficients, duct material properties (thermal expansion, swelling and creep), nozzle support condition, core radius, core axial location, core height, driver assembly radial thermal gradient, ACLP location and compressibility, and gaps at the ACLP and TLP elevations.
- Published through SciTech Connect.
Annual NEACRP meeting, Helsinki, Finland, 14 Sep 1987.
- Funding Information:
View MARC record | catkey: 14801638